Wow!! That's great. Overhead, energized catenary is one of the things on my long term modeling to do list. Track work (maintenance) for example, must be difficult. There are additional considerations, I would believe one must get out of the habit of simply reaching on to the track to fix something, re-rail a car, etc. Hopefully, one day I'll try it.

The title says, he's modeling Höllentalbahn.This line in southern Black Forrest (German: Schwarzwald) is known for having been a testbed for 20 kV 50 Hz power supply from the 1930s through the 1960s. Then the supply was changed into the standard 15 kV 162/3 Hz.